| Boulogne-sur-Mer to Culpeper (Virginia) | 3,812.87 mi (6,136.22 km) |
| Boulogne-sur-Mer to Culver City (California) | 5,540.19 mi (8,916.08 km) |
| Boulogne-sur-Mer to Cumberland (Maryland) | 3,790.86 mi (6,100.80 km) |
| Boulogne-sur-Mer to Cupertino (California) | 5,460.64 mi (8,788.05 km) |
| Boulogne-sur-Mer to Cutler Bay (Florida) | 4,527.92 mi (7,286.98 km) |
| Boulogne-sur-Mer to Cutlerville (Michigan) | 3,920.83 mi (6,309.97 km) |
| Boulogne-sur-Mer to Cuyahoga Falls (Ohio) | 3,834.19 mi (6,170.54 km) |
| Boulogne-sur-Mer to Cypress (California) | 5,539.57 mi (8,915.08 km) |
| Boulogne-sur-Mer to Cypress Gardens (Florida) | 4,464.54 mi (7,184.99 km) |
| Boulogne-sur-Mer to Cypress Lake (Florida) | 4,546.63 mi (7,317.09 km) |
| Boulogne-sur-Mer to D'Iberville (Mississippi) | 4,642.49 mi (7,471.36 km) |
| Boulogne-sur-Mer to Dakota Ridge (Colorado) | 4,789.63 mi (7,708.17 km) |
| Boulogne-sur-Mer to Dale City (Virginia) | 3,778.07 mi (6,080.21 km) |
| Boulogne-sur-Mer to Dallas (Georgia) | 4,306.45 mi (6,930.56 km) |
| Boulogne-sur-Mer to Dallas (Oregon) | 5,053.53 mi (8,132.88 km) |
